I am new to Android Studio. What I need to do is add a few jar files in the External Libraries below the < JDK > folder.
Add your jar file to the folder app/libs. Then right click the jar file and click "add as library".
If there is no libs folder you can create it. Click on the combo box that says "Android", and change it to "Project"
From here, you can right click on "apps" in the directory tree and go to "New" => "Directory"